Theorem v1.2.0

Added

• Library "Unshelved" filter — Added an "Unshelved" quick filter option to
  both desktop and mobile library filter menus to easily find books that are not
  assigned to any shelf or collection.
• Google Play Books-style jump navigation — Following links, citations,
  footnotes, TOC chapters, or bookmarks now features location undo/redo controls
  (<Undo2 /> / <Redo2 />) directly in the top titlebar when controls are
  revealed, along with Alt+Left / Alt+Right keyboard shortcuts. The reading
  viewport remains 100% clean and distraction-free with zero floating badges.

Fixed

• Centralized back navigation & mobile gestures — Fixed the Android hardware
  and gesture back button navigation via a centralized LIFO handler stack.
  Back actions cleanly dismiss open modals and overlays, step back through
  reading jumps, and exit back to the library or OS at the root.
• Reader Titlebar Back Button — Clicking the top-left back button in the
  reader titlebar now directly flushes progress and returns to the Library
  instead of stepping backward through previous page turns.
• Desktop blank page on TOC / menu navigation — Fixed an issue in the Foliate
  paginator runtime where navigating to a chapter from the Table of Contents or
  menu on desktop landed on a blank padding page (page 0), requiring a manual page
  turn before text rendered. Paged navigation now anchors directly to content
  page $\ge 1$.
• Shelves responsive grid alignment — Synchronized Shelves and Shelf Detail
  column calculations and CSS responsive grid breakpoints with the Library page
  (2xl:grid-cols-8, xl:grid-cols-7, lg:grid-cols-5, md:grid-cols-4,
  sm:grid-cols-3, grid-cols-2), unifying view mode preferences and fixing
  grid collapsing to 2 columns on search.
• Startup diagnostics & logging — Added explicit startup lifecycle
  breadcrumbs and structured file logging targets to aid troubleshooting early exits.
• Yearly Book Goal undercounted — The yearly goal showed far fewer books
  than were actually completed because the counter was only incremented on the
  reader's auto-completion path; books marked "Finish" manually (library
  context menu, batch bar, shelves) or completed earlier/synced-in were never
  counted. The yearly count is now derived from the library itself (books with
  a completedAt in the current year), so it is always accurate and can't
  drift. Applied to the Statistics "Yearly Book Goal" bar, the page subtext,
  and the Share Stats card.
• Metadata edits did not sync — After editing a book's info, the changes
  did not propagate to devices that already had the book. The peer merge kept
  its own (old) values for description, publisher, language, ISBN, published
  date, and category (match.X || inc.X), and title/author only adopted
  longer values. The merge now adopts the incoming metadata, so edits made
  after an initial sync reach other devices.
• Cover edits did not sync — Changing or removing a cover showed only on
  the editing device. data: cover paths were stripped from the sync payload
  (and coverBlobHash was never used to transfer the bytes), so peers kept
  the old cover. Covers (already downsampled to ≤200×300 webp) are now
  serialized into the book payload, and the merge adopts an incoming data:
  cover, so cover changes propagate.

Changed

• Settings "Current Progress" removed — The Yearly Book Goal progress bar
  in Settings duplicated the Statistics page, so it was removed to avoid
  confusion.
• Settings storage now shows only downloaded books — The Books row in
  Data & Storage previously summed fileSize over the whole synced library
  (including books synced from another device whose files aren't stored
  locally) and showed the total book count. It now shows only the books
  actually downloaded to the device and their on-disk size, with a note for
  any sync-only books that aren't downloaded yet. The Library page continues
  to show the total library count.
• Statistics "Books Completed" no longer shows a fake target — The bar
  previously implied a goal by rendering 26 / 31 where the /31 was just
  "completed + 5", not a real goal. It now renders as a plain count.